L1A to EB1 from outside USA

I have completed 6.5 yrs in L1A in managerial role. Now the same employer wants me to stay outside of USA for few months.
1)Can we apply EB1 while being outside USA?
2)Do we have to apply for L1 A extn for remaining 6 months of 7 yrs while applying for EB1?
3)Can a new employer sponsor L1A and apply for EB1 while entering the country?

Comments

Hello
My employer is present in multiple geographies and my association with it has been > 8 years.
Assuming I-140 approved & L1A visa term is near max out ( 7 years) --> priority status NOT current --> I-485 CANNOT be applied , i have below question

1) Is there a way i can get EAD based on approved I-140 though my 7 years in L1 are completed ?

2) Is there a way I can move to different geography for same employer and file from I-485 application when priority date becomes current without entering USA?

3)If my presence is required in USA for I-485 application , which may mean that i will have to wait to get relevant VISA( like new H1B or L1A) to renter to USA which could take few years . Is there any alternative to re-enter as soon as priority date becomes current ?